Description: Lightweight monocoque construction. Low profile clamp reduces stress on lightweight saddle rails. Bolts oriented to the axis of the rails for greatest contact area with the saddle. 25mm offset, now also available in 45mm offset for use with today's compact frame geometry. Textured clamp area eliminates saddle slippage. 166g (27.2/300mm). 176g (45mm offset/31.6/300)